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sender verify defer for <>: lowest numbered MX record points to local host :temporarily rejected RCPT <>: Could not complete sender verify
If you get the error while sending mail, you can get it solved by following the steps described here.
This error has occurred because of the server is treating the domain as remote domain and you need to change it from the server side configuration.
For that follow the below steps,
Log on to the server via ssh as root
Edit the file vi /etc/remotedomains and search for the domain facing the issue.
Remove that domain name from the above file and save it.
Go to /etc/localdomains file and add the domain name in this file.
Now try sending mail from the account and it will be sent successfully.
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